[FLINK-5866] The implementation of FailoverRegion.

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.3.0
• Component/s: Runtime / Coordination
• Assignee: shuai.xu
• Reporter: shuai.xu
• Created: 21/Feb/17 10:42
• Updated: 28/Feb/19 14:01
• Resolved: 07/Jul/17 09:21

Description

In flip1, FailoverRegion will manage the failover of a minimal pipelined conncected executions.
One job graph may has several FailoverRegions and they will be calculated statically after job graph is attached.
FailoverRegion has serval states, CREATED, CANCELING, CANCELED, RUNNING, it will transforms its state according to the state of the ExectionVertexes it contains and drives the failover during state transformation.
A FailoverRegion may have preceding and succeeding FailoverRegions. It will wait for its preceding ones and notice its succeeding ones when finishing.